I've been searching google and I'm about to start surfing through the code, but we all know how useless searching through drupal code is.
People are running into this problem everywhere, including on my website today. So I figured it was worthy of stackexchange.
Basically, I run into this error when trying to send the contact form from my website. Others have run into it with a variety of forms.
I want to know what we're running into that is causing this error.